8281251426816 has 100 divisors (see below), whose sum is σ = 24717355094982. Its totient is φ = 2760417128448.

The previous prime is 8281251426793. The next prime is 8281251426821. The reversal of 8281251426816 is 6186241521828.

It is a happy number.

8281251426816 is a `hidden beast` number, since 8 + 28 + 1 + 2 + 514 + 26 + 81 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5398373433600 + 2882877993216 = 2323440^2 + 1697904^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 99800005 + ... + 99882948.

Almost surely, 2^{8281251426816} is an apocalyptic number.

It is an amenable number.

8281251426816 is an abundant number, since it is smaller than the sum of its proper divisors (16436103668166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8281251426816 is an equidigital number, since it uses as much as digits as its factorization.

8281251426816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199682983 (or 199682958 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The spelling of 8281251426816 in words is "eight trillion, two hundred eighty-one billion, two hundred fifty-one million, four hundred twenty-six thousand, eight hundred sixteen".